Title:
ANAEROBIC TREATMENT METHOD AND ANAEROBIC TREATMENT APPARATUS
Document Type and Number:
Japanese Patent JP2017051912
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a biological treatment system which uses two-stage anaerobic treatment, thereby can materialize a high treatment efficiency and reduction in an installation space.SOLUTION: An anaerobic treatment method is provided in which organic waste water is caused to sequentially pass through for treatment a first-stage anaerobic treatment tank 2 and a second-stage anaerobic treatment tank 3 that are arranged in series. The first-stage anaerobic treatment tank 2 is a strongly mixing type fluidized bed anaerobic treatment tank filled with a carrier, while the second-stage anaerobic treatment tank 3 is a plug-flow-type fluidized bed or fixed bed anaerobic treatment tank filled with a carrier. The first-stage anaerobic treatment tank 2 subjects the organic waste water of a CODof 2,500 mg/L or more to anaerobic treatment to obtain treated water of a CODof 500 mg/L or less.SELECTED DRAWING: Figure 1
Inventors:
KAGAMI TSUBASA
TOKUTOMI TAKAAKI
TOKUTOMI TAKAAKI
Application Number:
JP2015178398A
Publication Date:
March 16, 2017
Filing Date:
September 10, 2015
Export Citation:
Assignee:
KURITA WATER IND LTD
International Classes:
C02F3/28
Attorney, Agent or Firm:
Tsuyoshi Shigeno
Takayuki Shigeno
Takayuki Shigeno